We would like to migrate to a huge landscape and keep our same SpectroSERVER name
Please check the below, these might help . In case you are going from Legacy Handle to Huge Landscape Handle, using Modeling Gateway export/import would be the way to go
Scenarios for upgrading to CA Spectrum 10.2
CA Spectrum 10.2 install has options for Legacy Landscape Handle and Huge Landscape Handle during install.
CA Spectrum: Migration - YouTube